PTP Slave
Network Time Client
The PTP Slave provides a high performance synchronization clock solution (SETS) for use in SDH/SONET back haul applications or as a replacement system, allowing for synchronization over packet switched networks (PSN). The PTP Slave Network Time Client also provides time distribution using PSN, IRIG B and RS232. This is done using Precision Time Protocol (PTP) over an Ethernet network.
Key Features
- Delivers highly economic end-to-end frequency synchronization
- Frequency accuracy better than 10ppb possible using Giga bit switches
- Precision timing circuits ensure stability in event of synchronization signal interruption
- Client system time accuracy better than 1 microsecond using Giga bit switches
- Configuration and alarm reporting capabilities using Simple Network Management Protocol (SNMP)
- Time of Day (TOD) is provided for support of legacy equipment using IRIG B and RS232
Synchronization
PTP V2 IEE 1588 packets over Ethernet network
System Benefits
- Powerful network delay analysis delivers full time alignment over hostile networks (including Layer 2 and Layer 3 routing)
- Configured or automatic best master clock selection
- No need for antennas (GPS)
- E1 ITU G.703 synchronization clock signal is configurable via user menus
- Unicast operation ideal for use in Telecoms environment
Platforms
The PTP Slave is available as a board-level product, as a rack-mountable unit or as a stand alone unit.
Module connections
The unit provides two standard RJ45 connections to a 100BASE-T network. One for configuration and firmware uploads and the other for PTP connection to the master PTP clock. A 9 way D type socket is also available for RS232 connection for configuration, status and firmware upload purposes (115.2kbaud, 8 bit characters and 1 stop bit). 1PPS and 10MHz outputs are provided via two BNC 50Ω sockets. E1 output via 75Ω BNC socket and RJ45 connection.
Interface Standards
PTP IEEE 1588 V2-4 G.82617
ITU G.703. G.704, G.706, G.736, G775, G823
Ethernet IEEE802.3
Outputs
10 MHz sinusoidal - BNC 50Ω socket. Phase aligned +/- 100ns of 1PPS output.
1 Vrms into a 50Ω load. (Frequency accuracy T.B.A.)
1PPS – BNC 50Ω socket. 2.5Vpp +/- 0.1Vpp into a 50Ω load phase aligned to master +/-100ns (dependent on architecture of LAN ie. Router, hubs, switches used and quality of oscillator specified)
E1 ITU G.703 - synchronization clock signal (AMI and HDB3 encoding – Ethernet connector (RJ45) balanced or BNC 75Ω socket unbalanced.
DC-level shifted Irig B – BNC socket (grounded) 50Ω DC Timecode/Time Pulse output 2.5Vpp +/-0.1Vpp into a 50Ω load.
Serial message RS232 – D type 9 way socket NMEA GPRMC message format. 9600 baud, 1 stop bit and no parity.
Inputs
DC supply voltage -48V +/- 12V
PTP packets IEEE 1588 version 2 – Ethernet connector (RJ45) (100Base-T or better LAN)
SNMP – Ethernet connector (RJ45) (10Base-T or better LAN-WAN) to allow a web user interface
Physical
210mm W x 125mm D x 40mm H
Weight: TBA
Power: (-36) to (-60)V DC nominal -48V DC
Optional mounting size: 19” rack mount (1U high, 125mm deep)
Optional Stand-Alone unit: Dimensions TBC
Environmental (Operation & Storage)
Temperature: 0°C to 40°C
Humidity: up to 95% RH (non-condensing)
EMC: CE compliant
PTP Slave Datasheet